In order to improve the efficiency of the photovoltaic(PV) system,the work point of solar PV cells need to be real-time adjusted for the realization of maximum power point tracking(MPPT).The GP algorithm of MPPT is re...
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In order to improve the efficiency of the photovoltaic(PV) system,the work point of solar PV cells need to be real-time adjusted for the realization of maximum power point tracking(MPPT).The GP algorithm of MPPT is researched in this *** it will use the F28035 to realize a novel global peak(GP) of MPPT based on perturb and observe (P&O) which can be suited under the different environmental conditions,and achieve the fast tracking process of the maximum power under the complex conditions,and realize the maximum power output of PV system.
This paper presents the methods for position tracking of the manipulator based on the model predictive control *** from characteristic of predictive control——a procedure for a finite horizon optimal control problem...
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This paper presents the methods for position tracking of the manipulator based on the model predictive control *** from characteristic of predictive control——a procedure for a finite horizon optimal control problem——this method count the minimal control when control energy reaches its least in ***,the mutative control use of a posteriori and a priori numerical information,which is readily available in the scheme,is evaluated through the computed closed-loop *** different from the conventional MPC,the predictive model used in this paper is *** key attribute of scheme presented is an internal model,on which the predictive control updates with each certain angle-range *** compute needs support of hardware,the effectiveness of the proposed scheme can be concluded if this approach be applied to the eye-to-hand RR manipulator system.
In order to safeguard the safety of the railway,the intrusion clearance detection system is needed on the worksites of crossing or paralleling the existing railway lines during the process of Jinghu high-speed railway...
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In order to safeguard the safety of the railway,the intrusion clearance detection system is needed on the worksites of crossing or paralleling the existing railway lines during the process of Jinghu high-speed railway *** on net and web remote monitoring technology,in this paper the software of intrusion clearance detection system is *** paper introduces in detail the monitoring system software's whole structure,functions and key *** value method and least square method are used in the algorithm of defining the monitored *** field experiments have been completed in three Jinghu high-speed railway worksites in Taian and *** results of the tests are accurate and timely,and good effect has been obtained.
In certain new type tank gun technical conditions integrated test system,we firstly realize on line test of tank gun under non disassembly situation by using data acquisition card ----4472B produced in American NI ***...
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In certain new type tank gun technical conditions integrated test system,we firstly realize on line test of tank gun under non disassembly situation by using data acquisition card ----4472B produced in American NI *** realizes multiple data concurrent acquisition and processing and ensures the integral correlation of each testing *** system adopts PXI main control platform and actualizes the technical conditions integrated test system of breechblock and recoil system based on Virtual Instrument *** practical use,the result proves that the system has prominent character of integrated testing,online testing,visual data and convenient operation.
A new noncontact method of position and attitude measurement for moving railway vehicles based on lasers and CCD is proposed in this *** method provides a solution for the measurement reference problem during the kine...
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A new noncontact method of position and attitude measurement for moving railway vehicles based on lasers and CCD is proposed in this *** method provides a solution for the measurement reference problem during the kinematic safety inspection process of the railway *** principle and realization process are introduced in this paper. By using a set of mirrors installed on the ground,lasers,CCD camera and FPGA based image processing device installed on the vehicles,the system can realize real time measurement of position and attitude between the vehicle and the ground *** with an inertial navigation system,this method can provide a continuous measuring reference with acceptable errors during the process of kinematical inspection. The results of the experiments show that the method proposed in this paper has high accuracy,wide measurement range, simple structure,and good practical values.
This paper presents a Direction-Of-Arrival(DOA) estimation method for coherent *** estimation is an important part in the target precision *** when the signals are correlated,conventional algorithm will fail in DOA es...
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This paper presents a Direction-Of-Arrival(DOA) estimation method for coherent *** estimation is an important part in the target precision *** when the signals are correlated,conventional algorithm will fail in DOA estimation such as MUSIC.A new de-correlation DOA estimation algorithm is proposed for *** is based on the cross-correlation vector matrix *** complete the DOA estimation for coherent signals,the internal relation of array receiving data is *** algorithm can accurately estimate the DOAs of coherent incident signals without spatial *** with MMUSIC algorithm,it has better estimation *** wide coherent signals,its performance is superior to ISM and *** results are presented to illustrate the efficiency and accuracy of this method.
By applying matter-element theory,extension set theory and dependent function calculation of extension method,the classical and limited matter-elements of state quality evaluation of positioning bolt in tower crane we...
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By applying matter-element theory,extension set theory and dependent function calculation of extension method,the classical and limited matter-elements of state quality evaluation of positioning bolt in tower crane were set up,and an extension model of the multifactor synthetic evaluation on the bolt state quality was established as well in this *** factors on reliability safety,such as strength of extension,wedge load,moment of torque,corrosion value and thread wearing capacity,were used to evaluate bolt state quality based on extension *** quality evaluation was conducted on test data of 11 positioning bolt,and objective and reasonable evaluation results were *** method can reflect more objectively and truly the state quality degree of actual positioning bolts in tower ***, the extension theory is more effective and practical in state quality evaluation.
To achieve integrated test of system functions and performance signals of variable Coast Defense radars, combined with the bus system structure to conduct integrated analysis and research on versatility of coast defen...
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To achieve integrated test of system functions and performance signals of variable Coast Defense radars, combined with the bus system structure to conduct integrated analysis and research on versatility of coast defense radar test *** the various components of the structure, functions and realizations,focused on the key technologies of adapter's optimal *** the study of the versatility of test system,the problems such as most units under test(UUT), different interfaces of components under test and numerous types of signals etcetera could be successfully resolved. Achieved the test resources of test platform could be used to the maximum extent,provided effective support for coast defense radar's test and fault diagnosis.
This paper proposes a solution of monitoring platform about WSN-based nuclear power plant equipment operation and health *** developed the backstage supporter software to achieve a system on wireless sensor network,wh...
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This paper proposes a solution of monitoring platform about WSN-based nuclear power plant equipment operation and health *** developed the backstage supporter software to achieve a system on wireless sensor network,which include data collection and communication, parameters settings,warning processing,data display,data *** software has successful run on the demonstration system and achieve better results based on actual research project.
In this paper,a new type concept design of air purifier using UV disinfection as the main means of sterilization has been proposed based on the background of development of indoor air *** this basis,the overall functi...
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In this paper,a new type concept design of air purifier using UV disinfection as the main means of sterilization has been proposed based on the background of development of indoor air *** this basis,the overall function requirements of the house purifier has been *** working principle of the overall framework and structure of the control system has been *** 128 of AVR microcontroller is the core of the control *** the microcontroller has controlled the main woking parts of the air purifier,which formed the smart circuit operating *** design and feature implementation of power control *** data acquisition,LCD circuit and UV lamp control module circuit has been described in detail.
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